FIGURE 1 in Reconsideration of the genera Merogomphus Martin, 1904, and Anisogomphus Selys, 1857, including erection of a new genus, with a new species and discussion of additional specimens from Cambodia

FIGURE 1. Diagnostic details of males of some Euthygomphus spp. as illustrated in literature: a–h—anal appendages; i–j,l– m,o—distal part of penis (vesica spermalis); k,n—secondary genitalia; a–b,i–j—E. martini (therein considered as Merogomphus martini): a—after Fraser (1934: fig. 95b); i—after Fraser (1940: plate 3.3); b,j—after Lahiri (1987: fig. 364– 365,314–315); c–d,k—E. parvus (as Merogomphus parvus): c,k—from South Sumatra, Lampoeng residency, Giesting near Talang Padang, Wai Teboe River after Lieftinck (1941: plate 13, fig. 3–5); d—from Malay Peninsula, Central Perak, Sungai Plus, near Lasah after Lieftinck (1964: fig. 46); e–f,l–m,p–q—E. koxingai (as Anisogomphus koxingai): e,l,p—the holotype, after Chao (1954: fig. 293–297); f,m,q—from China, Guandong after Wilson & Xu (2009: fig. 1e–g); g,n—E. fujianensis, the holotype of Anisogomphus fujianensis, after Zhou & Wu (1992: fig. 16–18); h,o,r—A. chaoi, the holotype of Anisogomphus chaoi, after Liu (1991: fig. 3–8). Not to scale; i,b,k mirrored.